Introduction: This study aimed to measure the changes in oral health-related quality of life of the patients. referred to Shahid Chamran Hospital in Shiraz before and after the orthognathic surgery. Methods: This prospective study was performed using the 14-item oral health impact profile (OHIP-14) questionnaire. The questionnaires were given both before and four months after the orth... https://spencertifieders.shop/product-category/reel-to-reel-tape-players/